FR2275110A1 - Positive and negative light modulation device - single triac circuit modulates both channels - Google Patents

Positive and negative light modulation device - single triac circuit modulates both channels

Info

Publication number
FR2275110A1
FR2275110A1 FR7421366A FR7421366A FR2275110A1 FR 2275110 A1 FR2275110 A1 FR 2275110A1 FR 7421366 A FR7421366 A FR 7421366A FR 7421366 A FR7421366 A FR 7421366A FR 2275110 A1 FR2275110 A1 FR 2275110A1
Authority
FR
France
Prior art keywords
triac
voltage
channels
lamps
trigger
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
FR7421366A
Other languages
French (fr)
Inventor
Patrick Rondeau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to FR7421366A priority Critical patent/FR2275110A1/en
Publication of FR2275110A1 publication Critical patent/FR2275110A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
    • H05B39/04—Controlling
    • H05B39/041—Controlling the light-intensity of the source
    • H05B39/044—Controlling the light-intensity of the source continuously
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

Landscapes

  • Ac-Ac Conversion (AREA)

Abstract

Light modulator device which enables one circuit to control two complementary luminous channels as a function of the amplitude of a low frequency signal, u ses a single triac. The principle of connecting the record channel can be applied to any of the currently made positive triac modulators. The device is based on the fact that according to the voltage amplitude applied between the trigger and anode (1) of the triac, the latter can be used as an open or closed switch. In the case where the voltage is greater than the trigger step of the triac, it is the series of lamps (3) which are fed under nominal voltage, according to the operation of a classic light modulator. In the case where the control voltage is lower than the trigger voltage of the triac, the latter is used as an open switch and one series of lamps (4) is fed via the other (s). If a correct power relationship between the lamps is chosen, only one set (e.g. 4) is illuminated.
FR7421366A 1974-06-13 1974-06-13 Positive and negative light modulation device - single triac circuit modulates both channels Withdrawn FR2275110A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7421366A FR2275110A1 (en) 1974-06-13 1974-06-13 Positive and negative light modulation device - single triac circuit modulates both channels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7421366A FR2275110A1 (en) 1974-06-13 1974-06-13 Positive and negative light modulation device - single triac circuit modulates both channels

Publications (1)

Publication Number Publication Date
FR2275110A1 true FR2275110A1 (en) 1976-01-09

Family

ID=9140270

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7421366A Withdrawn FR2275110A1 (en) 1974-06-13 1974-06-13 Positive and negative light modulation device - single triac circuit modulates both channels

Country Status (1)

Country Link
FR (1) FR2275110A1 (en)

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Legal Events

Date Code Title Description
ST Notification of lapse